Mitsubishi WNMA080408 MC5015 Carbide Turning Inserts for Cast Iron Machining
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MITSUBISHI WNMA080408 MC5015
High-Speed Cast Iron Authority | Advanced CVD Coated Carbide
Product Overview
The Mitsubishi WNMA080408 MC5015 is a heavy-duty, double-sided 80° hexagonal (Trigon) negative insert specifically engineered for the high-efficiency machining of cast iron. Featuring the specialized MC5015 CVD coating, this insert excels in abrasive wear resistance and thermal stability. It is the premier choice for CNC lathe operations involving gray cast iron (GG) and ductile cast iron (GGG), ensuring consistent performance even in high-velocity production environments.
ISO Designation Identification
Trigon 80°
Negative 0°
Tolerance
No Chipbreaker
IC 12.7mm
Thick 4.76mm
Radius 0.8mm
Metric vs. Imperial Comparison
| Technical Features | Metric (ISO) | Imperial (ANSI) |
|---|---|---|
| Model Number | WNMA 080408 | WNMA 432 |
| Inscribed Circle (IC) | 12.7 mm | 0.500 inch |
| Thickness | 4.76 mm | 0.187 inch |
Grade & Geometry: MC5015 CVD Specialist
The MC5015 grade belongs to Mitsubishi's high-performance cast iron turning series. It features a thick, multi-layered Alumina (Al2O3) coating that acts as a powerful thermal barrier, allowing for high cutting speeds without sacrificing edge integrity. The WNMA (Flat top) geometry without a chipbreaker is designed for stable, heavy-duty cutting where the material (cast iron) naturally breaks into short chips, maximizing the strength of the cutting edge.
Recommended Cutting Parameters
Optimized for Gray & Ductile Cast Iron (K-Class):
- Cutting Speed (Vc): 200 - 450 m/min (650 - 1470 SFM)
- Feed Rate (f): 0.15 - 0.45 mm/rev (0.006 - 0.018 ipr)
- Depth of Cut (ap): 0.5 - 4.0 mm
*Note: Running at higher speeds helps activate the CVD coating's thermal protective properties.*
Required Tooling:
Shop Compatible MWLNR / DWLNR Tool HoldersCustomer Feedback
⭐⭐⭐⭐⭐ "Perfect for Gray Iron" - David B., USA
"Running these on brake rotors. The MC5015 grade handles the abrasive nature of cast iron significantly better than general-purpose inserts."
⭐⭐⭐⭐⭐ "Original Quality" - Hans G., Germany
"Authentic Mitsubishi. Consistent tool life across every edge. Very stable for high-volume production."
⭐⭐⭐⭐ "High Speed Performance" - Yuki T., Japan
"The wear resistance at 350 m/min is impressive. Cuts through ductile iron without any cratering issues."
⭐⭐⭐⭐⭐ "Great Life" - Robert K., Canada
"6 edges per insert makes this very cost-effective. Fast delivery and original packaging."
⭐⭐⭐⭐⭐ "Tough Tooling" - Felipe S., Brazil
"Even with scale on the casting surface, the WNMA geometry holds up. Highly recommended for heavy turning."
Technical Q&A
Q: Can WNMA080408 be used for steel?
A: It is not recommended. WNMA (Flat Top) lacks a chipbreaker for steel's long chips. For steel, use WNMG with a grade like MC6025.
Q: Is this insert double-sided?
A: Yes, it is a negative insert with 6 usable cutting edges (3 on each side).
Q: What is the main benefit of MC5015?
A: It is specifically optimized for abrasive resistance in cast iron, outperforming general grades by preventing rapid flank wear.
Expert Tip: Cast Iron Turning
Because cast iron produces short, powdery chips, high-pressure air or coolant is essential to prevent chip accumulation around the indexable tool, ensuring the high-speed capability of the MC5015 coating is fully utilized.
Need Help With BEYOND Inserts?
Looking for a BEYOND equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This BEYOND insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.